ExifTool HtmlDump Option

Below is an example of the ExifTool HtmlDump output (the exiftool
"-htmlDump" option). Move your cursor over the data to highlight
individual blocks and reveal tool tips for extra information. (You must have
JavaScript enabled.)

The command used to generate the output below was:

exiftool -htmldump t/images/FujiFilm.jpg > out.html

In this output, normal
data blocks are light or dark green,
unused blocks are brown, and double-referenced blocks are
red or pink. A
blue tag name indicates the value is referenced by an
offset in the IFD (ie. the value is longer than 4 bytes),
purple indicates that the actual offset differs from the
recorded offset, and a red name indicates an invalid
offset. Odd offsets are flagged with "(odd)" and
out-of-sequence tag ID's are indicated by "(seq)" because
the TIFF specification states that values must begin on a (2-byte) word boundary
and that IFD entries must be in order of increasing tag ID. All data in the
maker notes value block is underlined.

Currently, only TIFF/EXIF and JPEG meta information is dumped. The leftmost
column of the output gives the offset in hex relative to the start of the TIFF
header (by default). For a TIFF image this is at the start of the file, but for
a JPEG image it is 10 bytes after the start of the APP1 EXIF segment. However,
this base offset can be specified on the command line with "-htmlDump#" (eg.
"-htmlDump0" for absolute offsets), or via the API with the "HtmlDumpBase"
option.